Seiko Prospex Solar Tuna SNE575 vs Seiko SKX007

Both are dive watches in the mid tier. In short: the Seiko SKX007 is mechanical (automatic) for the enthusiast feel and no battery; the Seiko Prospex Solar Tuna SNE575 is solar / light-powered for accuracy and low maintenance. The Seiko Prospex Solar Tuna SNE575 is solar / light-powered, 200m water resistance, 47mm, hardlex crystal; the Seiko SKX007 is automatic, 200m water resistance, 42mm, hardlex crystal.

Last verified 2026-06-27 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

Spec	Seiko Prospex Solar Tuna SNE575	Seiko SKX007
Movement	Solar / light-powered	Automatic
Water resistance	200m	200m
Case size	47mm	42mm
Crystal	hardlex	hardlex
Style	Dive	Dive
Price tier	Mid	Mid

Which should you buy?

The Seiko SKX007 is mechanical (automatic) for the enthusiast feel and no battery; the Seiko Prospex Solar Tuna SNE575 is solar / light-powered for accuracy and low maintenance
The Seiko Prospex Solar Tuna SNE575 wears 47mm vs the Seiko SKX007's 42mm — choose by wrist size

Where to buy

Seiko Prospex Solar Tuna SNE575See price on AmazonCheck price

Seiko SKX007See price on AmazonCheck price

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FAQ

What's the difference between the Seiko Prospex Solar Tuna SNE575 and the Seiko SKX007?
Both are dive watches in the mid tier. The Seiko Prospex Solar Tuna SNE575 is solar / light-powered, 200m water resistance, 47mm, hardlex crystal; the Seiko SKX007 is automatic, 200m water resistance, 42mm, hardlex crystal.

Which is better value, the Seiko Prospex Solar Tuna SNE575 or the Seiko SKX007?
Both sit in the mid tier, so it comes down to movement, water resistance and case size — see the spec table above.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-27. Copy a ready-made reference:

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